No Doubt Dog's love bones, but how could JW one better? Add a squeaker, designed so it can't fall out, and make it out of tough natural rubber. Your dog will love the result so much, we're pretty sure it's one bone he definitely won't bury. These tough, dog rubber toys were developed for and by pet owners in order to provide a superior outlet for interactive fun between dog and owner, as well as for the play and exercise of the dog by itself. Pliable, resilient natural rubber has proven itself to be the best material to satisfy the dog's normal craving to chew.